Re: [Bitcoin-development] BIP70 extension to allow for identity delegation

2014-03-02 Thread Jeremy Spilman
On Fri, 28 Feb 2014 03:46:49 -0800, Mike Hearn m...@plan99.net wrote:3) Whilst these payment processors currently verify merchants so the security risk is low, in future a lighter-weight model or competing sites that allow open signups would give a weak security situation: a hacker who

Re: [Bitcoin-development] BIP70 extension to allow for identity delegation

2014-03-02 Thread Mike Hearn
Perhaps the UI just isn't expressive enough currently to expose this situation in any way, let alone reliably alert the user to the issue, because there's no way for the payment processor to get authenticated fields other than memo into the UI. I think for now as long as payment processors

Re: [Bitcoin-development] BIP70 extension to allow for identity delegation

2014-03-02 Thread Mike Hearn
On Sat, Mar 1, 2014 at 9:07 PM, Dev Random c1.devran...@niftybox.netwrote: I'm wondering about the small business case. A small business or an individual might not have the technical expertise to perform the delegation signature. If they take delivery of an SSL cert from the CA themselves,

Re: [Bitcoin-development] BIP70 extension to allow for identity delegation

2014-03-02 Thread Mike Hearn
On Sun, Mar 2, 2014 at 4:20 PM, Andreas Schildbach andr...@schildbach.dewrote: I somehow think that it is too early for this heavy kind of extension, given that the first version of BIP70 isn't even deployed widely let alone *used*. Definitely agree - like I said, I publish this only because

Re: [Bitcoin-development] BIP70 extension to allow for identity delegation

2014-03-01 Thread Kevin Greene
Another example use-case to back up devrandom's point is using a twitter handle as the merchant name. In that example, a 3rd party service hosts and signs the PaymentRequest, but when someone opens that PaymentRequest in their wallet, they should know that they are paying the specified twitter

[Bitcoin-development] BIP70 extension to allow for identity delegation

2014-02-28 Thread Mike Hearn
Now we're starting to see the first companies deploy BIP70, we're encountering a need for identity delegation. This need was long foreseen by the way: it's not in BIP70 because, well, we had to draw the line for v1 somewhere, and this is an issue that mostly affects payment processors. But I